Quick answer
Swordfish (Xiphias gladius) typically live around 9–15 years. Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
Key takeaway
Swordfish (Xiphias gladius) typically live around 9–15 years. Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
Swordfish lifespan in the wild
Field and museum records place most swordfish near 9–15 years. That figure blends ages at death across regions, so treat it as a planning range. Body size (about 450 kg) and risk lifestyle both shape the average.
What shortens swordfish lives
Predation, infectious disease, injury, food shortages, and habitat fragmentation cut survival. Roadkill and human conflict matter wherever swordfish share landscapes with people.
What helps swordfish live longer
Connected habitat, low chronic stress, and reliable food support longevity. For captive or domestic relatives, species-correct diet and veterinary screening matter more than generic “pet” advice.
Swordfish life stages
Juveniles usually face higher mortality than prime adults. Older animals may move less, show dental wear, or lose body condition — useful signs when ageing swordfish in the field.
Diet and ecological role
Swordfish feed primarily on other animals (fish and squid). Foraging strategy depends on season, local prey or plant abundance, and competition with other species. As fish, they play a measurable role in their ecosystem — controlling prey numbers, dispersing seeds, or shaping habitat through feeding and movement patterns that other wildlife depends on.
Conservation and human interaction
The IUCN lists swordfish as Least Concern. Habitat loss, hunting, climate change, and conflict with people are among the main threats worldwide. Responsible ecotourism, anti-poaching patrols, and community-based conservation help in parts of their range. Never approach or feed wild swordfish — observe from a safe distance and support reputable conservation organisations.
Sources
Swordfish FAQs
How long do swordfish live?
Swordfish (Xiphias gladius) typically live around 9–15 years. Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
What is the scientific name of the swordfish?
Xiphias gladius — used in research and conservation listings for swordfish.
What do swordfish eat?
Swordfish eat fish and squid, with seasonal and regional variation in Temperate and tropical open oceans.
Where do swordfish live?
They are associated with Temperate and tropical open oceans. Local presence depends on food, cover, and human land use.
What is the conservation status of swordfish?
Listed in our guides as Least Concern. Check the IUCN Red List and national assessments for the latest formal category.